59 lines
2.1 KiB
Bash
59 lines
2.1 KiB
Bash
#!/bin/bash
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# Generate a Markdown change log of pull requests from commits between two tags
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# Author: Russell Heimlich
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# URL: https://gist.github.com/kingkool68/09a201a35c83e43af08fcbacee5c315a
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# HOW TO USE
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# Copy this script to a directory under Git version control
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# Make the script executable i.e. chmod +x changelog.sh
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# Run it! ./changelog.sh
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# Check CHANGELOG.md to see your results
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# Repo URL to base links off of
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REPOSITORY_URL=https://github.com/c9s/bbgo
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# Get a list of all tags in reverse order
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# Assumes the tags are in version format like v1.2.3
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GIT_TAGS=$(git tag -l --sort=-version:refname)
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# Make the tags an array
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TAGS=($GIT_TAGS)
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LATEST_TAG=${TAGS[0]}
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PREVIOUS_TAG=${TAGS[1]}
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# If you want to specify your own two tags to compare, uncomment and enter them below
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PREVIOUS_TAG=$LATEST_TAG
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LATEST_TAG=main
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# Get a log of commits that occured between two tags
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# We only get the commit hash so we don't have to deal with a bunch of ugly parsing
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# See Pretty format placeholders at https://git-scm.com/docs/pretty-formats
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COMMITS=$(git log $PREVIOUS_TAG..$LATEST_TAG --pretty=format:"%H")
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# Store our changelog in a variable to be saved to a file at the end
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MARKDOWN="[Full Changelog]($REPOSITORY_URL/compare/$PREVIOUS_TAG...$LATEST_TAG)"
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MARKDOWN+='\n'
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# Loop over each commit and look for merged pull requests
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for COMMIT in $COMMITS; do
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# Get the subject of the current commit
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SUBJECT=$(git log -1 ${COMMIT} --pretty=format:"%s")
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# If the subject contains "Merge pull request #xxxxx" then it is deemed a pull request
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PULL_REQUEST=$( grep -Eo "Merge pull request #[[:digit:]]+" <<< "$SUBJECT" )
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if [[ $PULL_REQUEST ]]; then
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# Perform a substring operation so we're left with just the digits of the pull request
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PULL_NUM=${PULL_REQUEST#"Merge pull request #"}
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# AUTHOR_NAME=$(git log -1 ${COMMIT} --pretty=format:"%an")
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# AUTHOR_EMAIL=$(git log -1 ${COMMIT} --pretty=format:"%ae")
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# Get the body of the commit
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BODY=$(git log -1 ${COMMIT} --pretty=format:"%b")
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MARKDOWN+='\n'
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MARKDOWN+=" - [#$PULL_NUM]($REPOSITORY_URL/pull/$PULL_NUM): $BODY"
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fi
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done
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# Save our markdown to a file
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echo -e $MARKDOWN
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